I know how you feel bitt, I have the exact same problem of being able to point out bad bits of design but unable to design anything myself.

The other developers at a previous job used to take the piss out of me over it, accusing me of only ever designing UIs that consisted of red and black. The funny thing was while they could also design better UIs than me they were't so good at spotting other people's bad design as I am.

This was probably my best bit of UI ever and I still know it sucks



You'd think given that I can see that it sucks that I'd be able to fix it...